Raspberry Pi 3A+ Mod Brings Double the RAM | Tom's Hardware
The Raspberry Pi 4 has been announced! - Hardware - Home Assistant Community
How to increase the RAM on my Raspberry Pi from 1 gig to 4 - Quora
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Amazon.com: Osprey Electronics Raspberry Pi 4 4GB Starter Kit, Raspberry Pi 4 Case with PWM Fan, Raspberry 15W 5V 3A Power Supply, Type-C Charging Cable for Raspberry Pi 4B (4GB RAM) :
Raspberry Pi 4 hits stores with faster CPU, 4K video, and RAM options | VentureBeat